Smoking Article and Method for Manufacturing a Smoking Article

ABSTRACT

A smoking article includes a cylindrical shape with a longitudinal axis running through respective base areas of a distal end and a mouth end of the smoking article, wherein the smoking article includes the following segments, which are arranged subsequently in the following order from the distal to the mouth end, and are at least in part wrapped in a circumferential wrapper: a tobacco segment including tobacco or tobacco derived smokable material, a cooling segment including a cylindrically shaped cooler material having a first flow path from the tobacco segment to a filter segment, the filter segment including a second flow path from the cooling segment to the mouth end. A surface of the cooler material is at least in part coated with a tobacco product including tobacco particles having an average particle size of 30 μm and a dispersion medium for dispersing the tobacco particles.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application is a national phase entry under 35 U.S.C. § 371of International Application No. PCT/EP2021/078608, filed Oct. 15, 2021,published in English, which claims priority to European Application No.20202055.8 filed Oct. 15, 2020, the disclosures of which areincorporated herein by reference.

FIELD OF THE INVENTION

The present invention relates to a smoking article, preferably aheat-not-burn product, comprising an improved taste.

BACKGROUND

Typically, a tobacco segment of such a heat-not-burn article comprisesreconstituted tobacco (RTB) as the tobacco derived smokable material.The smokable material is then heated by an electrical heater, which isinserted into the smoking article from its distal end. The smokablematerial typically consists of tobacco material and a suitable binder.When this smokable material is heated with the electrical heater totemperatures up to 250° C., the binder evaporates and thereby generatesan inhalable aerosol. The inhalable aerosol also carries flavoringsubstances and nicotine from the smokable material. Also, the inhalableaerosol in a heat-not-burn product derived from tobacco or tobaccoderived smokable material still comprises taste deficits when comparedto regular ready-made cigarettes.

SUMMARY

Therefore, the objective of the invention is to provide an improvedsmoking article, in particular a heat-not-burn product, which comprisesan improved taste, that is easy to manufacture and also cost-effective.

This objective is reached by a smoking article comprising a cylindricalshape with a longitudinal axis running through respective base areas ofa distal end and a mouth end of the smoking article, wherein the smokingarticle comprises the following segments, which are arrangedsubsequently in the following order from the distal to the mouth end,and are at least in part wrapped in a circumferential wrapper:

-   -   a) a tobacco segment comprising tobacco or tobacco derived        smokable material,    -   b) a cooling segment comprising a cylindrically shaped cooler        material having a first flow path from the tobacco segment to a        filter segment,    -   c) the filter segment comprising a second flow path from the        cooling segment to the mouth end.

The invention is characterized in that a surface of the cooler materialis at least in part coated with a tobacco product comprising tobaccoparticles having an average particle size of 30 micrometer and adispersion medium for dispersing the tobacco particles.

After the aerosol has been generated in the tobacco segment, the aerosolis guided from the tobacco segment into the cooling segment. The coolingsegment cools the generated aerosol to a temperature which is safe forthe consumer to inhale. The cooling takes place by convection duringguiding the aerosol along a first flow path from the tobacco segment tothe filter segment. The first flow path through the cooling segment isarranged parallel to the longitudinal axis. During the passage of thecooling segment, the aerosol gets in contact with the tobacco productarranged on a surface of the cooler material. When the aerosol isbrought in contact with the tobacco product, the aerosol picks uptobacco flavor from the tobacco particles comprised in the tobaccoproduct. In this way, the aerosol can be flavored in a very natural andeffective way. In this way, it is also possible to improve the taste ofthe smoking article without the need to change the tobacco segment orits components. This makes the invention very versatile and easy tocombine with existing smoking articles, preferably a heat-not-burnproduct. It has been found, that with the average particle size of 30micrometers, the taste delivery to the aerosol is optimized. With thelarge surface area an effective interaction of the aerosol with thetobacco particles is provided.

The tobacco particles are dispersed in a dispersion medium. Thedispersion medium preferably comprises water, monovalent alcohols,polyvalent alcohols, sugar alcohols, sugars and/or polyvalent alcoholesters. The term polyvalent alcohols includes (among others) glyceroland propylene glycol. The dispersion medium together with the tobaccoparticles forms a liquid or paste-like tobacco product before thetobacco product is arranged in the filter segment. The dispersion mediumcontent in the tobacco product may be reduced due to drying after thetobacco product is arranged in the filter segment.

According to another embodiment, the tobacco segment also comprises thetobacco product. In this way, the tobacco segment will provide theaerosol with a base flavor derived from the tobacco product.Subsequently, the aerosol comprising the base flavor will then enter thecooling section where the aerosol will again pick up further flavorsubstances from the tobacco product arranged in the cooling section. Byusing a tobacco segment with or without the tobacco product in theinvention, the taste of the smoking article can be fine-tuned. Also, theoutside of the cooling segment will heat up to a certain temperaturewhen the hot aerosol is directed through the cooling segment for coolingtogether with the cooling segment, also the tobacco product coated ontoat least a part of the outer lateral area of the cooling segment, willheat up to a certain extent. The tobacco product on the outer lateralarea will then release the tobacco flavor into the environment. This canprovide an additional flavor sensation to the consumer and may cover upthe otherwise unpleasant burning smell of the tobacco or tobacco derivedsmokable material in the tobacco segment. This flavor release into theenvironment and cover-up of the unpleasant burning smell will alsoimprove the overall taste perception of the smoking article for theconsumer. In a preferred embodiment, the tobacco product arranged on theinner and/or outer lateral area of the cooling segment is applied to therespective area in a pattern.

According to another embodiment, the cooling segment comprisesventilation holes, wherein the tobacco product is only arrangeddownstream of the ventilation holes. Through the ventilation holes,additional air from the surrounding of the smoking article can be drawninto the first flow path when the consumer draws on the smoking article.With the tobacco product arranged downstream of the ventilation holes,the tobacco product is brought in contact with an already cooleraerosol. Depending on the tobacco product composition, this isbeneficial for flavor transfer from the tobacco product to the aerosol.This embodiment is preferred for less flavorful tobacco types comprisedin the tobacco product. Also, the complete aerosol stream comprising theadditional air from the ventilation hole is brought in contact with thetobacco product. This means that the complete aerosol may pick up flavorfrom the tobacco product, which is then delivered to the consumer for afull taste experience.

According to another embodiment, the cooling segment comprisesventilation holes, wherein the tobacco product is only arranged upstreamof the ventilation holes. With the tobacco product arranged upstream ofthe ventilation holes the tobacco product is placed in an area of thecooling segment in which the aerosol still comprises a highertemperature. This ensures a better flavor transfer from the tobaccoproduct to the aerosol. It is also possible to arrange the tobaccoproduct both upstream and downstream of the ventilation holes. Again,the tobacco product may be arranged downstream and/or upstream of theventilation holes in a pattern.

According to another embodiment, the cooling segment further comprises aflow diverter arranged in the through-hole of the cooling segment,wherein the flow diverter diverts the first flow path directly to thetobacco product coated surface. Depending on the diameter of the throughhole only a part of the aerosol is brought in contact with the tobaccoproduct arranged on the inner lateral area of the cooling segment.Especially the part of the aerosol streaming right through the center ofthe through-hole may not get in direct contact with the tobacco product.

This problem can be prevented by the flow diverter. The flow diverterwill block a certain cross section of the first flow path. Preferably,the flow diverter blocks a center part of the cross section of the firstflow path. In particular, this means that the flow diverter does notblock a part of the cross section of the first flow path arrangeddirectly at the inner lateral area. By blocking the center part of thefirst flow path, the aerosol is forced to travel along the non-blockedpart of the cross section of the first flow path. In this way theaerosol is directed directly to the tobacco product coated surface. Thiswill improve the interaction between the tobacco product and the aerosoland therefore increase the flavor transfer from the tobacco product tothe aerosol.

According to another embodiment, the flow diverter is a protrusion ofthe filter segment protruding into the through-hole of the coolingsegment. This embodiment denotes a very easy and secure way to arrangethe flow diverter in the through-hole of the cooling segment. Thecooling segment is arranged directly adjacent to the filter segment inthe smoking article. In this way, a protrusion of the filter segment caneasily be arranged to protrude into the through-hole of the coolingsegment. This not only reduces the number of parts of the smokingarticle and therefore eases its assembly, but it also secures the flowdiverter in its central position in the first flow path of thethrough-hole of the cooling segment. In particular, the flow diverterwill not contact the inner lateral area of the cooling segment as itwould be the case if the flow diverter is a loose element without anymeans to secure its position.

Preferably, the protrusion of the filter segment being the flow divertercomprises a cylindrical or frustoconical shape. In the latter case, thelarger base area of the frustoconical shape is preferably arranged atthe filter segment, whereas the tip of the frustoconical shape ispreferably arranged towards the tobacco segment. The flow diverterpreferably consists of the same material as the filter segment. But itis also conceivable to use a different material for the flow diverterthan for the filter segment.

According to another embodiment, the flow diverter is a loose elementarranged inside the through-hole of the cooling segment comprising theshape of the sphere or prolate spheroid arranged with its longest axisparallel to the longitudinal axis. With the flow diverter being a looseelement, the material and shape of the flow diverter can be chosen morefreely compared to the flow diverter embodied as a protrusion of thefilter segment. It is also conceivable that the flow diverter, which isa loose element and is arranged inside the through-hole of the coolingsegment, comprises a cylindrical shape. Preferably, the maximum diameterof the flow diverter measured perpendicular to the longitudinal axis ofthe smoking article is smaller than the diameter of the through-hole ofthe cooling segment. Preferably, the diameter of the flow diverter is 5to 10% smaller than the diameter of the through-hole of the coolingsegment. With this sizing, excess movement of the flow diverter in thethrough-hole is prohibited. This ensures the high-quality perception ofthe smoking article.

With the preferred shape of the sphere or prolate spheroid, the flowdiverter can gradually deflect the aerosol towards the inner lateralarea of the through-hole. The flow diverter may consist of a plasticmaterial, preferably a plastic material able to withstand temperaturesof 250° C. or more.

All previously described embodiments of the flow diverter may becombined with only an in-part coating of the inner lateral area with thetobacco product. In particular, the tobacco product may be applied tothe inner lateral area in a pattern. With all embodiments of the flowdiverter, it is also possible to control the draw resistance of thesmoking article. In particular, it is possible to mimic the drawresistance of a conventional cigarette together with the improved tastedue to the tobacco product arranged in the cooling segment, the overallexperience for the consumer becomes very similar to a conventionalcigarette.

According to another embodiment, the cooling segment comprises multipleparallel first flow paths each being circumferentially enclosed by arespective part of the cooling segment, wherein the respective parts ofthe surface are at least in part coated with the tobacco product. Suchan arrangement may for example be achieved by a rolled-up strip ofmaterial like rolled up paper or rolled up strip of corrugated cardboardor a bundle of parallel, straw like tubes being smaller in diameter thanthe cooling segment. This embodiment of the cooling segment will providemore rigidity to the smoking article. It also provides more laminar flowalong the first flow paths. The tobacco product may be arranged on anysurface arranged at any of the multiple parallel first flow paths.

The objective of the invention is also reached by a method formanufacturing a smoking article, wherein a tobacco segment comprisingtobacco or tobacco derived smokable material, a cooling segmentcomprising a cylindrically shaped cooler material having a first flowpath and a filter segment comprising a second flow path are arranged inthe given order subsequently on a longitudinal axis and are at least inpart wrapped in a circumferential wrapper thereby forming the smokingarticle having a cylindrical shape with a longitudinal axis runningthrough respective base areas of the smoking article being a distal end,at which the tobacco segment is arranged, and a mouth end, at which thefilter segment is arranged, respectively, wherein the first flow pathconnects the tobacco segment with the filter segment and the secand flowpath connects the cooling segment with the mouth end. The method ischaracterized in that before arranging the cooling segment between thetobacco and the filter segment, a surface of the cooler material is atleast in part coated with a tobacco product comprising tobacco particleshaving an average particle size of 30 micrometers and a dispersionmedium for dispersing the tobacco particles.

By coating the surface of the cooler material with the tobacco productbefore arranging the cooling segment between the tobacco and the filtersegment, a standard arrangement process for arranging all segments ofthe smoking article can be used. This enables a very cost-effective useof existing production methods and changes the production method onlythere where it is necessary. This method also increases productionflexibility because the cooling segment can easily be exchanged withanother cooling segment either comprising no tobacco product at all or adifferently distributed tobacco product. In an embodiment of theinvention, in which the tobacco segment also comprises the tobaccoproduct, the tobacco product is also arranged in the tobacco segmentbefore assembling the cooling segment, the tobacco segment and thefilter segment together. This again increases the production efficiencyand flexibility.

According to another embodiment of the method, the tobacco product isapplied to the surface of the cooler material by spraying or printing.Preferably, the tobacco product is diluted for the spraying or printingprocess. Preferably, the dilution medium is the same as the dispersionmedium. Preferably, the tobacco product is diluted with water propyleneglycol and/or glycerin.

For spraying the tobacco product is sprayed with a nozzle to the surfaceof the cooler material to the desired extent. A pattern may be appliedto the surface of the cooler material by masking certain areas of thesurface or by moving the spraying nozzle over the surface in a certainpattern. The thickness of the tobacco product layer applied of thecooler material may be changed by either revisiting already sprayedareas with the nozzle and applying a second coat or by increasing theflow of the spraying nozzle.

For printing the tobacco product is preferably diluted as describedbelow. An especially preferred embodiment comprises tobacco particlesbetween 1 to 58% of the total tobacco product composition. In this rangenot only a correct viscosity of the tobacco product is ensured but alsoa sufficient color intensity. The latter is of special importance if thetobacco product is used for embellishments of the smoking article. Theviscosity of the tobacco product is preferably between 50 and 350 dPasmeasured with a falling rod viscometer at 25° C. This viscosity range isensured with the previously given amount of tobacco particles in thetobacco product. This results in a total density of the diluted tobaccoproduct between 0.8 and 1.5 g/cm³.

The printing process itself may be carried out with either conventionalprinting machines for printing on continuous material. Such conventionalprinting machinery may include a print roller and an ink reservoir inwhich the tobacco product is comprised. The print roller is then coatedwith the tobacco product from the reservoir and then rolled over thesurface of the cooler material. It is also conceivable to use silkscreen printing or ink-jet printing. The printing process may be carriedout in line with the production of the cooling segment or externallybefore the production of the cooling segment.

For the printing process, the tobacco product may also contain solvents,pigments dyes, resins, lubricants, solubilizers, surfactants,particulate matter and/or fluorescents. Preferably, all these materialsare food-safe. Preferably, the tobacco product also contains water andhumectant. With the solvents, resins, lubricants and solubilizers and/orsurfactants, the rheological properties of the ink can be optimized.This will further improve the printing results. If the tobacco productis used for embellishment purposes, preferably on the outer lateral areaof the cooling segment, dyes, resins and/particulate matter can be usedto optimize the color intensity and hiding power of the tobacco productwhen printed on the surface of the cooler material. It is also possibleto adapt the color intensity of the tobacco product when printed bychoosing the tobacco type and concentration used as tobacco particles inthe tobacco product. For darker printing results with the tobaccoproduct, preferably dark tobacco types like burley tobacco, dark firecured tobacco and dark air cured tobacco are used.

Further advantages, objectives and features of the present inventionwill be described, by a way of example only, in the followingdescription with reference to the appended figures. In the figures, likecomponents and different embodiments can exhibit the same referencesymbols.

BRIEF DESCRIPTION OF THE DRAWINGS

The figures show:

FIG. 1 a general schematic view of the smoking article 1 comprising thecooling segment 6,

FIG. 2 a schematic view of the cooling segment 6 according to anotherembodiment,

FIG. 3 a schematic view of the cooling segment 6 according to adifferent embodiment,

FIG. 4 a detailed view of the surface 11 coated with the tobacco product12,

FIG. 5 different embodiments of the pattern 13,

FIG. 6 further embodiments of the pattern 13,

FIG. 7 two different embodiments of the cooling segment 6 comprisingmultiple flow paths 8 a to 8 e,

FIG. 8 the cooler material 7 comprising the tobacco product 12,

FIG. 9 two embodiments of the cooling segment 6 comprising ventilationholes 17,

FIG. 10 a schematic view of the cooling segment 6 comprising a flowdiverter 18 according to one embodiment,

FIG. 11 the cooling segment 6 comprising a flow diverter 18 according toa different embodiment,

FIG. 12 the cooling segment 6 comprising another embodiment of the flowdiverter 18,

FIG. 13 the cooling segment 6 comprising a flow diverter 18 according toanother embodiment,

FIG. 14 a flow chart of the method for manufacturing a smoking article1.

DETAILED DESCRIPTION

FIG. 1 shows a general view of the smoking article 1. The smokingarticle 1 comprises three different segments 3 arranged subsequentlyalong the longitudinal axis L. All three segments 3 comprise acylindrical shape 2, as well as the whole smoking article 1. The smokingarticle comprises a distal end 1 a, at which a tobacco segment 5 isarranged. The tobacco segment 5 comprises tobacco or tobacco derivedsmokable material from which upon heating an inhalable aerosol can begenerated. The smoking article 1 also comprises a mouth end 1 b at whicha filter segment 9 is directly arranged. Between the tobacco segment 5and the filter segment 9, a cooling segment 6 is arranged. The aerosolgenerated in the tobacco segment 5 is transferred along a first flowpath 8 through the cooling segment 6 to the filter segment 9, throughwhich it is transferred along a second flow path 10 to the mouth end 1b, at which it is delivered to the consumer. The cooling segment 6comprises a cylindrically shaped cooler material 7. The cooler material7 comprises at least one surface 11 on which the tobacco product 12 isdeposited. The surface 11 is not necessarily completely coated with thetobacco product 12. It is also conceivable that only a part of thesurface 11 is coated with the tobacco product 12. Preferably, a part ofthe surface 11 coated with a tobacco product 12 is directly adjacent tothe first flow path 8. In this way, the tobacco product 12 is brought indirect contact with the aerosol streaming along the first flow path 8.In this way, the aerosol can pick up flavor substances from the tobaccoproduct 12. This is a very efficient and easy way to improve the flavorof the aerosol of the smoking article 1.

FIG. 2 shows a schematic view of one embodiment of the cooling segment6. In this embodiment the cooling segment 6 consists of a sheet of thecooler material 7, which is rolled up to form a tube. Preferably, thecooler material 7 is paper or cardboard. The first flow path 8 isarranged in the tube. The tobacco product 12 is deposited on at least apart of the surface 11 of the sheet cooler material 7. Preferably, thetobacco material 12 is deposited on the part of the surface 11 a, whichis arranged in an inside of the tube. However, it is also conceivable todeposit the tobacco product 12 on a surface part 11 b, forming an outerarea of the tube. It is also conceivable to deposit the tobacco product12 on both the inner surface 11 a and the outer surface 11 b. It is ofcourse conceivable to coat all these surfaces only in part with thetobacco product 12. In the shown embodiment, the tobacco product 12 iscoated onto the surface 11 in circumferential rings 13 a to 13 c. Thecircumferential rings 13 a to 13 c comprise a respective extent e in thelongitudinal direction L. The circumferential rings 13 a to 13 c aredistanced from each other by a respective distance d. The distance d isalso measured along the longitudinal direction L. It is conceivable thatall circumferential rings 13 a to 13 c comprise the same distance d totheir respective neighbors. However, it is also conceivable that thecircumferential rings 13 a to 13 c comprise different distances d totheir respective neighbors. It is also conceivable that allcircumferential rings 13 a to 13 c comprise the same extent e. However,it is also conceivable that each circumferential ring 13 a to 13 ccomprises an individual extent e or that certain circumferential rings13 a to 13 c comprise the same extent, whereas other circumferentialrings 13 a to 13 c comprise a different extent.

FIG. 3 shows the cooling segment 6 according to a different embodiment.In this embodiment the cooling segment 6 comprises the shape of a hollowcylinder. The hollow cylinder comprises a through-hole 15 with an innerlateral area 14 encircling the through-hole 15. The hollow cylindercomprises also an outer lateral area 16, which denotes the outer-mostsurface of the hollow cylinder. In this embodiment the inner lateralarea 14 corresponds to the inner surface 11 a of the cooler material 7and the outer lateral area 16 corresponds to the outer surface 11 b ofthe cooler material 7. The first flow path 8 is arranged in thethrough-hole 15 of the hollow cylinder. In this embodiment, the coolermaterial 7 is preferably monoacetate and/or a plastic material. Thetobacco product 12 is preferably deposited on at least a part of theinner lateral area 14 and/or at least a part of the outer lateral area16. It is conceivable that the tobacco product 12 is arranged on theinner lateral area 14 and/or outer lateral area 16, in a pattern 13.

FIG. 4 shows a detailed view of the cooler material 7 with its surface11 on which the tobacco product 12 is deposited. In this embodiment, thetobacco product 12 is deposited on the surface 11 with a varying layerthickness. In this embodiment, the layer thickness of the tobaccoproduct 12 is increasing along the first flow path 8. In particular, ata position A marked in FIG. 4 , the layer thickness of the tobaccoproduct 12 is smaller than at a position B also marked in FIG. 4 . Theembodiment of the increasing layer thickness of the tobacco product 12along the first flow path 8 is preferred. In other words, the layerthickness of the tobacco product is smaller at a position A, closer tothe tobacco segment 5 than at a position B closer to the filter segment9. This embodiment is advantageous because the aerosol originating fromthe tobacco segment 5 comprises a comparably high temperature which isthen subsequently cooled down along the first flow path 8 when theaerosol travels through the cooling segment 6. This means that atposition A the aerosol comprises a higher temperature than at positionB. With a higher temperature at position A, the flavor transfer from thetobacco product 12 to the aerosol will be more efficient than at thelower temperature of position B. With the increasing layer thickness ofthe tobacco product along the first flow path 8, the less efficientflavor transfer with decreasing temperature of the aerosol will becompensated by providing more tobacco product 12 per area unit due tothe increased layer thickness of the tobacco product 12. In this way, aconstant flavor transfer from the tobacco product 12 to the aerosol ispossible although the transfer efficiency of the flavor to the aerosoldecreases with decreasing temperature along the first flow path 8.

FIG. 5 shows further embodiments of patterns in which the tobaccoproduct 12 can be deposited on the surface 11. In FIG. 5 the black linesrepresent the tobacco product 12, wherein the white undergroundrepresents the surface 11. The patterns may include hexagonal shapes,concentric squares, rectangles, or circles, zig-zagging or meanderinglines and/or parallel straight or curved lines. In alternative or inaddition to the different layer thickness depicted in FIG. 4 , it isalso conceivable to increase or decrease the amount of tobacco productdeposited per unit area of the surface 11 by increasing or decreasingthe density of the pattern 13. FIG. 5 shows different patterns 13 eachshown with different densities. In particular, the density of thepatterns 13 increases from left to right in FIG. 5 . This results inmore tobacco product 12 per area unit of the surface 11 for higherpattern densities. Accordingly, this results in a lower amount oftobacco product 12 per area unit of the surface 11 for lower patterndensities.

FIG. 6 shows three different embodiments of further possible patterns13. In FIG. 6 three different possible patterns 13 are shown. Thetopmost pattern 13 comprises a checkerboard pattern. The lowest pattern13 shown in FIG. 6 also comprises a checkerboard pattern. The pattern 13shown in the middle of FIG. 6 comprises a chaotic distribution ofsquares or pixels. Again, the black color represents the tobacco product12 wherein white color represents the uncoated surface 11. All threepatterns 13 shown in FIG. 6 comprise a decreasing density of the tobaccoproduct 12 per unit area of the surface 11 from left to right. Incontrast to FIG. 5 in which the patterns 13 from left to right showdistinct grates of density, the patterns 13 in FIG. 6 show a gradualchange of the tobacco product 12 density per unit area of the surface11. This is carried out by gradually decreasing the size of the squarescoated with a tobacco product 12 of the checkerboard pattern or bygradually decreasing the density of pixels which are coated with thetobacco product 12 in case of the chaotic arrangement of squares coatedwith the tobacco product 12. With these patterns 13 it is not onlyconceivable to realize a decreasing or increasing density of the pattern13 along the first flow path 8 but it is also conceivable to create analternating density of the tobacco product 12 of the surface 11 bydecreasing the density with subsequently increasing the density andrepeating this cycle as often as desired. In this way, the amount oftobacco product 12 deposited per unit area of the surface 11 can beadapted very precisely to the cooling profile of the cooling segment 6.

FIGS. 7 a and b show two different embodiments of the cooling segment 6comprising multiple flow paths 8 a-e. FIG. 7 a shows an embodiment inwhich the cooling segment 6 comprises a cooler material 7, which formsthe cooling segment 6. The cooler material 7 is arranged as the coolingsegment 6 in a rolled-up fashion. The cooler material 7 is preferablyrolled up with multiple windings, similar to a coil. The cooler material7 can either be a straight material, which is rolled up in a cylindricalshape or a corrugated material, which is again rolled up in acylindrical shape 2. The rolled up cooler material 7 preferably iswrapped in a second wrapper 4 a. With the second wrapper 4 a the rolledup cooler material 7 is kept in the cylindrical shape 2. The surface 11of the cooler material 7 is at least in part coated with the tobaccoproduct 12. Preferably, the cooler material 7 is rolled up into thecylindrical shape 2 in a lose manner. In this way, multiple flow paths 8a-c are formed between the individual directly adjacent layers of therolled up cooler material 7.

FIG. 7 b shows a different embodiment of the cooling segment 6comprising multiple flow paths 8 a-e. In this embodiment, the coolermaterial 7 consists of multiple tubes arranged parallel to each other.The tubes, i.e. the cooler material 7, are shaped like straws arrangedparallel to the longitudinal axis L. Through each of the tubes one ofthe multiple flow paths 8 a-e is arranged. Preferably, also flow paths 8a-e are arranged between neighboring tubes. In this way multiple flowpaths 8 a-e are arranged either in the tubes or between them. Each tubeof the cooler material 7 comprises an inner and outer surface 11 a, 11 bon which at least in part the tobacco product 12 is preferably arranged.It is conceivable to only arrange the tobacco product 12 on the innersurface 11 a of the tubes of the cooler material 7 but it is alsoconceivable to either arrange the tobacco product 12 only on the outersurface 11 b of the tubes of the cooler material 7 or on both inner andouter surfaces 11 a, 11 b.

FIG. 8 shows a sheet-like cooler material 7 with the tobacco product 12deposited on its surface 11. The sheet cooler material 7 is rolled up toform a cylindrical shape 2 in a rolled-up movement R marked with anarrow in FIG. 8 . In this manner, a cooling segment 6 similar to theembodiment shown in FIGS. 1, 2 and 7 a can be achieved. The coolermaterial 7 shown in FIG. 8 comprises tobacco product 12 on bothsurfaces, the inner surface 11 and the outer surface 11 b. But it isalso conceivable that only on the inner or on the outer surface 11 a, 11b tobacco product 12 is deposited. In the embodiment shown in FIG. 8 ,the tobacco product is only deposited on a part of the inner surface 11a and the outer surface 11 b. However, it is also conceivable that thetobacco product 12 is deposited either on the complete inner surface 11a, the complete outer surface 11 b or on both surfaces 11 a, 11 bcompletely. To achieve an embodiment of the cooling segment 6 shown inFIG. 7 a , the cooler material 7 would not be plain as shown in FIG. 8but would comprise a corrugated shape.

FIGS. 9 a and b show an embodiment of the cooling segment 6 comprisingventilation holes 17. The ventilation holes 17 are through-holes throughthe cooler material 7. This means that they connect the inner surface 11a with the outer surface 11 b of the cooler material 7. In particular, afluid flow is able to penetrate through the ventilation holes 17 from asurrounding of the cooling segment 6 into the inside of the coolingsegment 6 where the first flow path 8 is arranged. When the consumerdraws on the mouth end 1 b of the smoking article 1, not only is theaerosol transported from the tobacco segment 5 to the mouth end 1 b ofthe smoking article 1 but there is also an influx of air from outside ofthe smoking article 1 through the ventilation holes 17 to the first flowpath 8. The air streaming through the ventilation holes 17 into thecooling segment 6 joins there with the aerosol along the first flow path8 and is then subsequently delivered along the first and second flowpaths 8, 10 to the mouth end 1 b of the smoking article 1.

In the embodiment shown in FIG. 9 , the tobacco product 12 is arrangeddownstream of the ventilation holes 17. This means that air streaminginto the cooling segment 6 through the ventilation holes 17 afterwardspasses the tobacco product 12 when streaming along the first flow path 8together with the aerosol. FIG. 9 b shows an embodiment in which thetobacco product 12 is arranged upstream of the ventilation holes 17.This means that the aerosol first passes the tobacco product 12 andpicks up the tobacco flavor and then passes the ventilation holes 17where the aerosol is joined with the air streaming from an outside ofthe smoking article 1 into the cooling segment 6. In this embodiment,the air streaming into the cooling segment 6 through the ventilationholes 17 does not pass the tobacco product 12.

FIG. 10 shows a sectional view of the segments 3 of the smoking article1. In the shown embodiment of the cooling section 6 a flow diverter 18is comprised. The flow diverter 18 is carried out as a protrusion 19 ofthe filter segment 9 which protrudes from the filter segment 9 into thethrough-hole 15 of the cooling segment 6. With the flow diverter 18arranged in the through-hole 15 of the cooling segment 6, the first flowpath 8 is forced to circle around the flow diverter 18. The flowdiverter 18 preferably comprises a cylindrical shape. This cylindricalshape is shown due to the sectional nature of FIG. 10 as a rectangularshape. The first flow path 8, which has to flow around the flow diverter18, is deflected towards the surface 11 of the cooler material 7. Thisarranges the first flow path 8 closer to the surface 11, which is atleast in part coated with the tobacco product 12. This means that thefirst flow path 8 is directed towards the tobacco product 12 and istherefore able to interact much more effectively with the tobaccoproduct 12. As a result, the aerosol streaming along the first flow path8 picks up flavor substances from the tobacco product 12 much moreeffectively. The first flow path 8 spreads around the flow diverter 18.In the sectional view of FIG. 10 , this is depicted exemplarily by thetwo parallel flow paths 8 a and 8 b. When the aerosol transfers into thefilter segment 9, the aerosol streams along the second flow path 10. Inthe filter segment 9 the previously split up first flow path 8, 8 a, 8 bis preferably united back to a single second flow path 10.

FIG. 11 shows another embodiment of the flow diverter 18. Thisembodiment is similar to the embodiment shown in FIG. 10 . In contrastto the embodiment shown in FIG. 10 , the shape of the flow diverter 18is frustoconical. With the frustoconical shape of the flow diverter 18,a very efficient flow deflection of the first flow path 8 is achieved.The frustoconical shape of the flow diverter 18 comprises a tip 18 awhich broadens towards base 18 b of the flow diverter 18 along the firstflow path 8. With the sharp tip 18 a of the flow diverter 18 of thisembodiment, the first flow path 8 is easily deflected towards thesurface 11 of the cooling material 7 without any turbulences.

FIG. 12 shows another embodiment of the flow diverter 18. In thisembodiment, the flow diverter is a lose element 20 comprised in thethrough-hole 15 of the cooling section 6. The lose element 20 comprisesa spherical shape. The diameter d1 of the through-hole 15 is larger thanthe diameter d2 of the flow diverter 18. In this way, the flow diverter18 fits into the through-hole 15 of the cooling segment 6. Also, withthe smaller diameter d2 the first flow path 8 can pass between the flowdiverter 18 and the inner lateral area 14 or inner surface 11 a of thecooling segment 6. Preferably, the diameter d2 of the flow diverter 18is 5% smaller than the diameter d1 of the through-hole 15. In anespecially preferred embodiment, the diameter d2 of the flow diverter 18is 10% smaller than the diameter d1 of the through-hole.

FIG. 13 shows another embodiment of the flow diverter 18 carried out asa lose element 20. In this embodiment, the flow diverter comprises theshape of a prolate spheroid. The prolate spheroid comprises a longestaxis A1. The prolate spheroid is arranged with its longest axis A1parallel to the longitudinal axis L. The diameter d2 of the prolatespheroid measured perpendicular to its longest axis A1 is smaller thanthe diameter d1 of the through-hole 15 of the cooling segment 6.Preferably, the diameter d2 of the prolate spheroid is 5%, even morepreferred 10% smaller than the diameter d1 of the through-hole 15 of thecooling segment 6. In both embodiments of FIGS. 12 and 13 , the firstflow path 8 fully encircles the flow diverter 18. By encircling the flowdiverter 18 the first flow path 8 is brought in close proximity to thesurface 11 of the cooling segment 6. The surface 11 is at least in partcoated with the tobacco product 12. In this way, the aerosol travelsalong the first flow path 8 closely to the surface 11 coated with thetobacco product 12. This makes any flavor transfer from the tobaccoproduct 12 to the aerosol streaming along the first flow path 8 veryeffective.

FIG. 14 shows a flow chart of the method for manufacturing the smokingarticle 1. The method may start with the optional step of diluting 101the tobacco product 12. The dilution 101 may be necessary to achieve therequired viscosity of the tobacco product 12 for the subsequentprocesses 12. After diluting 101, the tobacco product 12 or, if nodilution takes place directly as a first step, the tobacco product 12 iscoated 102 onto the cooling segment 6. In particular, the tobaccoproduct 12 is coated 102 onto a surface 11 of the cooler material 7.This can be done either by spraying 103 or by printing 104. For thespraying 103, the tobacco product 12 is applied to the surface 11 with aspraying nozzle. If the tobacco product 12 is arranged 102 on thesurface 11 in a pattern 13, the pattern 13 is either achieved by placinga mask between the spraying nozzle and the surface 11 or by moving thespraying nozzle with respect to the surface 11, following the desiredpattern 13. If the tobacco product 12 is coated 102 on the surface 11 byprinting 104, the tobacco product 12 is applied to the surface 11 of thecooler material 7 preferably with a print roller. The print roller maycomprise recessed surface parts. Preferably, the recessed surface partsform a negative of the pattern 13 in which the tobacco product 12 isdesired to be coated 102 onto the surface 11. After the tobacco product12 has been coated 102 onto the surface 11 of the cooling material 7,the cooling segment 6 may be formed 105 from the cooler material 7. Thisstep of forming 105 the cooling segment 6 is also optional and onlytakes place if for example an embodiment like shown in FIGS. 7 a and bor FIG. 8 is used. For example, after coating the surface 11 at least inpart with the tobacco product 12 the cooler material 7 might be rolledup to form the cylindrical shape 2 of the cooling segment 6, as shown inFIG. 8 , during this forming step 105. Subsequently all segments 3, i.e.the tobacco segment 5, the cooling segment 6 and the filter segment 9are arranged 106 in the correct order along a common longitudinal axisL. After the segments 3 have been arranged 106, the segments 3 arewrapped 107 in a circumferential wrapper 4. It is not necessarily thecase that the wrapper wraps all segments 3 completely. It is indeedconceivable that the wrapper 4 wraps some segments 3 only in part. Atthis stage, the smoking article 1 is completely manufactured.

The applicant reserves his right to claim all features disclosed in theapplication document as being an essential feature of the invention, aslong as they are new, individually or in combination, in view of theprior art. Furthermore, it is noted that in the figures features aredescribed, which can be advantageous individually. Someone skilled inthe art will directly recognize that a specific feature being disclosedin a figure can be advantageous also without the adoption of furtherfeatures from this figure. Furthermore, someone skilled in the art willrecognize that advantages can evolve from a combination of diversefeatures being disclosed in one or various figures.

LIST OF REFERENCE SYMBOLS

-   -   1 smoking article    -   1 a distal end    -   1 b mouth end    -   2 cylindrical shape    -   2 a, 2 b base areas    -   3 segments    -   4 wrapper    -   4 a second wrapper    -   5 tobacco segment    -   6 cooling segment    -   7 cooler material    -   8 first flow path    -   8 a-e multiple flow paths    -   9 filter segment    -   10 second flow path    -   11 surface    -   11 a inner surface    -   11 b outer surface    -   12 tobacco product    -   13 pattern    -   13 a-c circumferential rings    -   14 inner lateral area    -   15 through-hole    -   16 outer lateral area    -   17 ventilation holes    -   18 flow diverter    -   18 a tip    -   18 b base    -   19 protrusion    -   20 loose element    -   101 diluting tobacco product    -   102 coating the surface with the tobacco product    -   103 spraying    -   104 printing    -   105 forming the cooling segment    -   106 arranging the segments    -   107 wrapping the segments    -   A position A    -   B position B    -   e extent    -   d distance    -   d1 diameter    -   d2 diameter    -   A₁ longest axis    -   L longitudinal axis, longitudinal direction    -   R roll-up movement

1. A smoking article comprising a cylindrical shape with a longitudinalaxis running through respective base areas of a distal end and a mouthend of the smoking article, wherein the smoking article comprises thefollowing segments, which are arranged subsequently in the followingorder from the distal to the mouth end, and are at least in part wrappedin a circumferential wrapper: a. a tobacco segment comprising tobacco ortobacco derived smokable material, b. a cooling segment comprising acylindrically shaped cooler material having a first flow path from thetobacco segment to a filter segment, c. the filter segment comprising asecond flow path from the cooling segment to the mouth end, wherein asurface of the cooler material is at least in part coated with a tobaccoproduct comprising tobacco particles having an average particle size of30 μm and a dispersion medium for dispersing the tobacco particles. 2.The smoking article according to claim 1, wherein: the tobacco segmentalso comprises the tobacco product.
 3. The smoking article according toclaim 1, wherein: the tobacco product is applied to the surface in apattern.
 4. The smoking article according to claim 3, wherein: thepattern comprises circumferential rings with an extent in a directionalong the longitudinal axis and distanced from each other along thelongitudinal axis by a distance.
 5. The smoking article according toclaim 3, wherein: the pattern comprises a varying layer thickness of thetobacco product on the surface.
 6. The smoking article according toclaim 1, wherein: the cooling segment comprises a shape of a hollowcylinder having an inner lateral area enclosing a through-hole throughwhich the first flow path is arranged, wherein the first flow path isalso parallel to the longitudinal axis, wherein the inner lateral areais at least in part coated with the tobacco product.
 7. The smokingarticle according to claim 1, wherein: the cooling segment comprises ashape of a hollow cylinder having an inner lateral area enclosing athrough-hole through which the first flow path is arranged, wherein thefirst flow path is also parallel to the longitudinal axis, wherein anouter lateral area of the cooling segment is at least in part coatedwith the tobacco product.
 8. The smoking article according to claim 6,wherein: the cooling segment comprises ventilation holes, wherein thetobacco product is only arranged downstream of the ventilation holes. 9.The smoking article according to claim 6, wherein: the cooling segmentcomprises ventilation holes, wherein the tobacco product is onlyarranged upstream of the ventilation holes.
 10. The smoking articleaccording to claim 6, wherein: the cooling segment further comprises aflow diverter arranged in the through-hole of the cooling segment,wherein the flow diverter diverts the first flow-path directly to thetobacco product coated surface.
 11. The smoking article according toclaim 10, wherein: the flow diverter is a protrusion of the filtersegment protruding into the through-hole of the cooling segment.
 12. Thesmoking article according to claim 10, wherein: the flow diverter is aloose element arranged inside the through-hole of the cooling segmentcomprising a shape of a sphere or prolate spheroid arranged with alongest axis thereof parallel to the longitudinal axis.
 13. The smokingarticle according to claim 1, wherein: the cooling segment comprisesmultiple parallel first flow-paths each being circumferentially enclosedby a respective part of the surface of the cooling segment, wherein therespective parts of the surface are at least in part coated with thetobacco product.
 14. A method for manufacturing a smoking article,wherein a tobacco segment comprising tobacco or tobacco derived smokablematerial, a cooling segment comprising a cylindrically shaped coolermaterial having a first flow path and a filter segment comprising asecond flow path are arranged in the given order subsequently on alongitudinal axis and are at least in part wrapped in a circumferentialwrapper thereby forming the smoking article having a cylindrical shapewith the longitudinal axis running through respective base areas of thesmoking article being a distal end, at which the tobacco segment isarranged, and a mouth end, at which the filter segment is arranged,respectively, wherein the first flow path connects the tobacco segmentwith the filter segment and the second flow path connects the coolingsegment with the mouth end, wherein before arranging the cooling segmentbetween the tobacco segment and the filter segment, a surface of thecooler material is at least in part coated with a tobacco productcomprising tobacco particles having an average particle size of 30 μmand a dispersion medium for dispersing the tobacco particles.
 15. Themethod according to claim 14, wherein: the tobacco product is applied tothe surface of the cooler material by spraying or printing.